Sole-stitching machine



' A. M. HOLTZMAN.

SOLE STITCHING MACHINE.

APPLICATION FILED 020.22, 1917. RENEWED MAR. 13, 1920.

1,347,038, Patented July 20, 1920.

INVENTOR ATTORNEY ABRAHAM MAX HOLTZMAN, OF BROOKLYN, NEW YORK.

SOLE-STITCHIN G MACHINE.

Specification of Letters Patent.

Patented July 20, 1920.

Application filed December 22, 1917, Serial No. 208,343. Renewed March13, 1920. Serial 1101365559.

T 0 all whom it may concern.

Be it known that I, ABRAHAM MAX HOLTZ- MAN, a citizen of the UnitedStates, and resident of borough of Brooklyn, county of Kings, city andState of New York, (whose post-otlice address is 187 Osborn St., Brooklyn, New York,) pray that Letters Patent may be granted to me for theImprovement in Sole-Stitching Machines, of which the following is aspecification.

This device has for its principal objects the provision of means foroperating a sole stitching machine by foot power. It has an advantage inthis regard not found in other machines in that the operator is in frontof the machine and in a seated position.

This machine operating by the applied weight of the operator may be usedwith material heavier or thicker than it is possible with a handoperated machine. Its work will also be found to be more even than thatof the hand operated machine and as I provide means which will allow theshoe to be turned through an almost complete circle it is quite obviousthat the work of stitching a sole may be performed as a continuous andrapid operation.

The construction of my device and the means for operating it will be setforth as the specification progresses.

The following is what I consider a good means of carrying out thisinvention and,

The accompanying drawings form a part of this specification in which:

Figure 1 shows a plan view of my machine and,

Fig. 2 an elevation thereof.

Similar reference numerals indicate like iparts in all the figures wherethey appear.

My machine is constructed upon a portion which may be termed a table,and this table is indicated at 1,

Under the table 1, I arrange a plurality of legs or supports 2 and 3,the table 1 and the legs or supports 2 and 3 may and should be formedfrom cast iron.

Into the table and at one side of the center thereof I produce a recess4, which will be later described or referred to.

In describing the operation and construction of my device I willcommence with the power mechanism and continue throughout the powertransmission and the stitching devices, in this way I hope to preserve acontinuity which may be readily followed.

Upon a bar 5, arranged low down between the legs 2 and 3 I place atreadle which is free to move upon the bar 5, a rod 7 connected by aball and socket 8 to the treadle is also connected to a crank 9 upon ashaft which supports the driving wheel 10. A ball and socket 11 servesas the connection between the rod 7 and the crank 9. and it will benoted that I provide a counter weight 12 in the driving wheel 10 at theside opposite to that toward which the crank 9 extends.

A belt 13 passing over the driving wheel 10 also passes over a drivenwheel 14 and the wheel 14 is secured to a shaft 15 having a crank 16.

A rod 17 operable upon the crank 16 connects with the needle bar lever18 and by the rotation of the crank 16 the rod 17 reciprocates theneedle lever 18.

pin 19 extending through the lever 18 is secured to the needle bar 20and the movement of the lever 18 will cause the needle bar 20 to bereciprocated.

A block 21, secured upon the rod 17 has a projection passing into thetable which projection operates the shuttle mechanism.

The shuttle and shuttle movement and the needle and thread feedingmechanism are similar to those employed upon machines such as that shownin the patent to Soens, Patent Number 1,215,733, and need not thereoforebe described in detail.

I have however eliminated certain of the parts of the Gritzner machineand have accordingly simplified the construction and operation ofmachines of this type, and I call particular attention to thearrangement of the driving mechanism and its connection with the needlebar and shuttle.

Modifications in the drive and in other parts may be made within thescope of the appended claims without departing from the principle orsacrificing the advantages of this invention.

Having carefully and fully described my invention what I claim anddesire to secure by Letters Patent is 1. A sole stitching machine havinga needle bar, a lever for operating said bar, a rod connected to saidlever a driving means for reciprocating said rod and an adjustableprojection movable upon said rod for operating the bobbin.

2. A sole stitching machine having a needle bar, a lever for operatingsaid bar, a rodconnccted to said lever, a crank for operating said rod,a projection adjustable upon said rod for operating the bobbin and afoot pedal, and a plurality of Wheels connected therewith for operatingsaid crank, said rod and said lever.

3 In a device of the character described a foot pedal, a counterbalanced driving wheel, a rod between said pedal and said driving wheeland having a ball and socket connection with said pedal and said wheel,a driven wheel, a crankc'onnected therewith and a rod from said crank tothe needle operating device and an adjustable projection upon said rodfor operating the bobbin.

Signed at New York city, in the county of New York and Stateof New York,this 29 day of November, 1917. ABRAHAM MAX HOLTZMAN.

